In the decade of 1850 the Catalan engineer Idelfons Cerdà designed the Eixample (Extension) which was the plan of Barcelona extension from it's Barrio Gotico (the middle Age district) with roman walls to the little villages surrounding the city. This city plan was designed with buildings blocks with an octagonal section composed by a grid of parallel and perpendicular streets. Inside each octagonal block an inner garden was also part of the city plan.
A diagonal avenue would cross in a transversal way the new grid of streets creating what today is called Avenida Diagonal.
Eventually the city became so largely populated that the inner gardens were not as widespread as meant in the original plan of Idelfons Cerdà but the octagonal structure was definitely in place. At the turn of the century in Eixample Art Nouveau buildings started to be build and created the magnificent area that it is today. Famous architect Antoni Gaudi played a significant role in making Paseo de Gracia (and many other streets), the heart of Eixample, the beauty that it is today. Also other great architects such as Lluís Domènech i Montaner and Josep Puig i Cadafalch played a major role in making the Art Nouveau area a jewel that attracts millions of visitors every year.
Paseo the Gracia ,which is now a very elegant shopping street, divides Eixample into two sides: Eixample dreta (Eixample right) and Eixample esquerra (Eixample left) and the streets around the paseo both to it's left and to it's right make what is called "Quadrado de oro_ (Golden Square) for the high concentration of top Art Nouveau buildings such as Pedrera, Casa Batllo, or Casa Fuster (now a 5* hotel) just to name few.
This picture from the top can make you appreciate Barcelona's beautiful underlined geometry.
If you are staying at Casita Sitges, you can easily make day trips to Barcelona by taking a train from Sitges train station and getting to Barcelona station in Paseo de Gracia in 30 minutes. When you get off the station the first thing you see is the amazing facade of Casa Batllo. Can you imagine any better start for a visit to Barcelona?
recommended by Paola at https://www.casitasitges.com